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- struct ScopedAllocator(ParentAllocator);
- ScopedAllocator delegates all allocation requests to ParentAllocator. When destroyed, the ScopedAllocator object automatically calls deallocate for all memory allocated through its lifetime. (The deallocateAll function is also implemented with the same semantics.)deallocate is also supported, which is where most implementation effort and overhead of ScopedAllocator go. If deallocate is not needed, a simpler design combining AllocatorList with Region is recommended.Examples:
import std.experimental.allocator.mallocator : Mallocator; ScopedAllocator!Mallocator alloc; assert(alloc.empty == Ternary.yes); const b = alloc.allocate(10); assert(b.length == 10); assert(alloc.empty == Ternary.no);
- Allocator parent;
- enum auto alignment;
- Alignment offered
- size_t goodAllocSize(size_t n);
- void allocate(size_t n);
- Allocates memory. For management it actually allocates extra memory from the parent.
- bool expand(ref void b, size_t delta);
- bool reallocate(ref void b, size_t s);
- Reallocates b to new size s.
- Ternary owns(void b);
- bool deallocate(void b);
- Deallocates b.
- bool deallocateAll();
- Deallocates all memory allocated.
- const Ternary empty();
- Returns Ternary.yes if this allocator is not responsible for any memory, Ternary.no otherwise. (Never returns Ternary.unknown.)